System and method for installing a pipe in a wall opening and its use

Abstract

A system for installing a pipe (10) in a wall opening (12), comprising a pipe (10) for insertion into the wall opening (12), a sealing space element (14) for sealing a space to be sealed between the pipe (10) and the wall opening (12), as well as the outer wall area in the ground arranged around the wall opening (12), expanding injection resin with an expansion volume of 3.0 - 6.0:1 for introduction into the space to be sealed, and a filling pipe (22) for filling the expanding injection resin into the space to be sealed, wherein the sealing space element (14) is designed in a band-like manner, wherein the sealing space element is arranged at least in sections on the pipe in a fixing area by means of at least one physical and / or chemical fastening means, characterized in that the sealing space element (14) is arranged on the pipe (10) in a first arrangement state when the pipe (10) is introduced into the wall opening (12),wherein the second end of the sealing space element (14) is designed to be free of fixation and loose and is arranged within the wall opening (12) in the annular space, and when the expanding injection resin is filled into the intermediate space (26) between the pipe (10) and the sealing space element (14), in a second arrangement state, is guided against the wall opening (12) and closes the space to be sealed in a controlled gas-tight and watertight manner, wherein the sealing space element (14) is arranged such that, when the pipe (10) is inserted into the wall opening (12), it is arranged partially outside the wall opening (12) in an outer region (24), and the fixing region of the sealing space element on the pipe, when the pipe is inserted into the wall opening, is arranged at a distance of 2 cm to 20 cm from the wall opening (12) in the outer region.

Description

[0001] The present invention relates to a system and method for installing a pipe in a wall opening and to the use of the system for sealing installation penetrations located in the ground through building walls, in particular according to the preamble of independent patent claim 1.

[0002] In addition to new construction, older buildings and renovations also require installation penetrations through building walls, for example, when laying service connections for electricity, gas, water, heating, or communication lines. Until now, this has been achieved in civil engineering by excavating the ground, for example, in the form of trenches or head holes, to first expose and access the building wall to be penetrated. This is extremely complex and requires careful planning, as the stability of the building wall must also be ensured.

[0003] In addition, above-ground openings in building walls or all other types of openings, penetrations, and grooves in the aircraft industry, automotive industry, mechanical engineering, shipbuilding, swimming pool construction, and electrical / electronics sectors must also be filled and sealed. This typically requires gas- and watertight sealing of the openings or pipes within them. The requirements are specified in corresponding standards, which may apply, for example, to a specific country or internationally.

[0004] Particularly in the building sector, numerous standards regulate what is understood as a serviceable and defect-free design of house connection elements, whether as individual components or as part of a structure, such as a building or a ship, etc. Such standards are currently contained in DIN 1968, DIN 1988, DIN 18012, DIN 18195, DIN 18336, G-459-1, G-459-2, G-459-1-W, VP-601, EW-400-1, EW-400-2, EW-400-3, W 404, and GW-322-2.

[0005] This means, for example, that house connections, including fittings, valves, and connections, must be both leak-proof and designed and installed in such a way that they can withstand the stresses and strains that occur during intended use. To achieve this, the space between the house connection pipe and the casing pipe, as well as the installation opening between the casing pipe and the wall, or between the concrete slab or house connection pipe and the wall or concrete slab, must be able to absorb vibration and swelling movements as well as component deformation to a limited extent, and must be leak-proof towards the connection space. In addition, house connections must be dimensioned for at least the maximum permissible operating pressure for which the pipe network to which the house connections are connected is designed or will be built. Critical points here are the sealing of the annular space to the building wall or the casing pipe to the house entry, or the house entry combination system itself.

[0006] Currently, hydraulic expanding mortars are the preferred waterproofing materials, although they have the disadvantage that they only fully cure after 28 days. Even then, these hydraulic expanding mortars can only absorb limited forces due to insufficient annular space filling. Furthermore, they lose their original sealing function under load due to a lack of adhesion to wall penetrations or core drillings, and especially to PVC or polyethylene plastics (for example, in combined house duct systems). As a result, groundwater, seepage water, and gas can penetrate the house duct and cause significant damage. Common joint filling materials based on polyurethane resin are also used. However, due to their specifications, these are always in the form of open-cell foam, meaning they are neither gas-tight nor watertight.In addition, these joint filling materials are extremely susceptible to hydrolysis and therefore do not meet the requirements of the DVGW worksheets G459 / VP601 / W400 / W404 / G322-2 / DIN 18195 / DIN 1988 for annular space seals for operating pressures up to 4 bar (1 bar = 105 Pa). Furthermore, they do not comply with the Energy Saving Ordinance for Building Construction (DIN 4108 Part 7, 2002 edition) with regard to the required light tightness.

[0007] The installation technology, particularly for gas and water house inlets in the civil engineering sector, requires a much higher degree of reliability of the gas and watertight filling products compared to hydraulic expanding mortars and / or well-known polyurethane resins due to the DVGW standard G459-1 with an operating pressure of up to 4 bar or DVGW standard VP 601 with an operating pressure of 1 bar.

[0008] Further sealing devices and methods are described in the publications EP 1 318 342 A1, DE 10 2009 061 082 A1, DE 10 2010 049 230 A1, and DE 199 15 667 A1. Consequently, the present invention is based on the object of providing a system and a method by means of which a gas-tight and / or watertight seal of a wall opening can be achieved quickly and reliably.

[0009] This object is achieved by a device according to patent claim 1 and by a method according to patent claim 6. Advantageous embodiments and further developments are the subject of the subclaims.

[0010] The core idea of ​​the present invention is that the system for installing a pipe in a wall opening comprises, in addition to a pipe for insertion into the wall opening, also a sealing space element for sealing a space between the pipe and the wall opening.

[0011] In wall penetrations, the wall openings usually have a larger diameter than the pipes passing through them. To ensure a gas-tight and / or watertight seal against moisture penetrating from the surrounding soil, both the annular space and the outer wall surface around the wall opening must be sealed. The annular space is preferably understood to be the space in the masonry spanned by the wall opening and in which the pipe is located when inserted.

[0012] The space to be sealed is understood to be the free space spanned between the pipe and the wall opening. In particular, the space to be sealed at least partially comprises the area of ​​the wall opening located inside the masonry through which the pipe is led, and / or at least partially an area of ​​the wall opening on the outside, advantageously the outside surface of the wall. Consequently, the space to be sealed advantageously also refers to the outside wall area in the ground, which is arranged around the wall opening. In the unsealed state, the wall opening is permeable to both gas and water, so that, for example, seepage water can penetrate into the interior of the building and damage the masonry there. The present invention ensures the safe, simple and rapid gas-tight and / or watertight sealing of the wall opening both inside the masonry and on its outside, i.e. towards the ground.

[0013] The sealing chamber element is band-like. Band-like refers in particular to a low thickness of the material in comparison to its length and / or width. This is advantageous because the sealing chamber element can be easily and quickly attached to the pipe without having to take into account any significant increases in circumference. Due to the thin design of the sealing chamber element, this essentially does not result in any significant increase in the outer circumference of the pipe. The use of the thin sealing chamber element therefore represents a significant simplification. Due to the thin material thickness of the sealing chamber element, the pipe can be inserted into the correspondingly provided wall opening at any time. There is no need to coordinate the diameter of the wall opening with the sealing chamber element because the latter is designed accordingly thin.

[0014] The sealing chamber element advantageously has a material thickness of 0.01 mm to 10 mm, even more advantageously from 0.35 mm to 1.25 mm. The sealing chamber element thus advantageously has a low inherent material thickness, so that the sealing chamber element only causes a slight increase in the outer diameter of the pipe.

[0015] It is conceivable that the outer diameter of the pipe with the attached sealing element could be increased by a factor B compared to the outer diameter of the pipe alone. Factor B lies in the range of 0.01% to 20%, particularly advantageously in the range of 0.1% to 5%. This very slight increase in diameter makes the pipe with the attached sealing element significantly easier and faster to insert through an existing wall opening, and material buildup is avoided. Complex diameter matching between the wall opening and the pipe is eliminated.

[0016] A further advantage is the use of a propellant-free, fast-curing, and high-strength two-component polyurethane system as the expanding injection resin. This is advantageous because it cures within 5-10 minutes and reaches its final strength after 20 minutes at the latest. Furthermore, this two-component polyurethane injection resin has the advantages of being dimensionally stable and / or predominantly closed-cell (approx. > 90%) and / or aging-resistant and / or water-resistant and / or rot-resistant and / or resistant to oils, microorganisms, water, and solvents. It also exhibits excellent adhesive properties to almost all known building materials, including polyethylene surfaces.The polyurethane-based expanding injection resin has an expansion volume in the range of 4.0 - 6.0:1, preferably in the range of 5.5 to 6.0:1, a bulk density after curing of 100 - 120 kg / m3 / 60° shA, a temperature resistance of -20° to +90°C, a tensile strength according to VP 601 of 25 - 35 kN, and a compressive strength of 400 - 450 kPa / m. Furthermore, the polyurethane-based expanding injection resin exhibits torsional stability with a torque of > 240 Nm.

[0017] Furthermore, an expanding epoxy-based injection resin can also be used, which has an expansion volume of 3.0 - 5.0:1, preferably 3.5 - 4.0:1. Furthermore, the expanding injection resin has a density of ≥ 400 kg / m3. This is advantageous because such a high density of the expanding injection resin provides a stronger seal for the area to be sealed, for example, with respect to water or gas, than comparable expanding injection resins that have a lower density. The expanding epoxy-based injection resin is a gas- and watertight, two-component epoxy resin (injection resin foam) of very high density, hardness, and compressive strength with a built-in blowing agent for independent, controlled volume expansion. The built-in blowing agent causes the expansion of the injection resin, preferably through chemical reactions.When components A and B, initially arranged separately from one another, are mixed, heat energy is generated in a reaction. This heat is sufficient to release volatile components from the components, causing the injection resin to increase in volume. Furthermore, the injection resin can also undergo volume expansion, for example, by the addition of a gas such as CO2 or (partially fluorinated) hydrocarbons. Depending on the choice of the specified propellant, the chambers in which components A and B are arranged, in the cartridge or in the spray nozzle sections in which components A and B are mixed, are made of heat-stable and / or pressure-resistant material.

[0018] The material base of the epoxy-based expanding injection resin comprises component A (expanding injection resin) and component B (expanding injection hardener), which are mixed together before use. For this purpose, the expanding injection resin is preferably supplied in a dual-chamber cartridge in which the two components are separated from one another. Before filling the expanding injection resin, for example into an opening, the separation between the two chambers must be removed and both components must be thoroughly mixed. This can be done by inserting the dual-chamber cartridge into a suitable hand-operated pressure gun and pressing in a plate located between the individual chambers of the dual-chamber cartridge. Furthermore, a mixing rod can be provided, by means of which preferably 20 - 60 mixing strokes are to be carried out in order to mix the two components together.

[0019] Component A of the expanding injection resin preferably consists of bisphenol A epichlorohydrin resin (CAS: 25068-386), bisphenol F epichlorohydrin resin (CAS: 9003-36-5), and torsyl isocyanate (CAS: 4083-64-1). Component B of the epoxy-based expanding injection resin preferably consists of isophoronediamine (CAS: 2855-13-2), dimethylhexamethylenediamine (CAS: 25620-58-0), diethylenetriamine (CAS: 111-40-4), or p-tert-butylphenol (CAS: 98-54-4).

[0020] In a further advantageous embodiment, the sealing space element is at least partially designed as a pipe casing. This is advantageous because it enables simple and uncomplicated insertion of the pipe with the sealing space element arranged thereon through the wall opening. The sealing space element is particularly advantageously designed as a single-layer casing, so that the pipe is at least partially enclosed circumferentially by the sealing space element. The sealing space element is particularly advantageous in this case in a tubular shape. This is of course not to be understood as limiting. The same design is conceivable if the sealing space element is wound around the pipe, for example in two layers. In this case, it is particularly important that the winding is designed such that an overlap region is formed.This is advantageous when filling the expanding injection resin, as it prevents unwanted, large-volume leakage of the injection resin from the sealing chamber element.

[0021] To illustrate the fastening means, it is conceivable that, for example, if the sealing space element is tubular, its first free end circumferentially encloses the pipe and is fastened to the pipe by this first end. If the sealing space element is designed as a flat element, it is accordingly wrapped circumferentially around the pipe, preferably in at least two layers, and is also connected to the pipe at its first end by at least one fastening means.

[0022] According to the invention, in house entries, the fixing area is positioned in the wall opening at a distance of 2 cm to 30 cm, more preferably at a distance of 5 cm to 20 cm, and most preferably at a distance of 7 cm to 15 cm, from the wall opening in the exterior area when the pipe is inserted. This distance has proven advantageous because the expansion of the injection resin and the resulting widening of the sealing chamber element allows for a particularly positive and force-fitting seal between the pipe and the wall opening.

[0023] Possible physical fastening devices include cable ties, rubber bands, adhesives, hose clamps, straps, cuffs, or the like. Furthermore, it is conceivable that the material of the sealing chamber element is designed in such a way that it softens and contracts when the temperature rises, thus creating a permanent connection to the pipe.

[0024] According to the invention, when the pipe is inserted into the wall opening, the sealing space element is arranged at least partially inside and at least partially outside the wall opening. As already explained above, the sealing space element is fixedly attached to the pipe at least on one side. As the pipe is inserted through the wall opening from the inside to the outside, the pipe is guided further until the fixing area is placed through the wall opening in the outside area. Due to the band-like design of the sealing space element, which in this state extends in the longitudinal direction of the pipe in the annular space, the second, loose end of the sealing space element is advantageously arranged inside the annular space and can also extend to the inside of the building. This facilitates the introduction of the expanding injection resin.

[0025] This arrangement also proves particularly advantageous because when the expanding injection resin is poured into the space between the pipe and the sealing chamber element, the latter absorbs the expanding injection resin and enables controlled expansion. This is advantageous because it prevents uncontrolled spreading of the injection resin both inside and outside the wall opening. The sealing chamber element can therefore be understood as a guide element that directs the expansion of the injection resin and guides it toward the wall opening to be sealed. This creates a gas-tight and / or watertight seal for the wall opening.

[0026] According to the invention, the sealing space element is arranged on the pipe in such a way that when the pipe is brought into the wall opening it is formed in a first arrangement state and can be transferred into a second arrangement state, preferably against the wall opening, when the expanding injection resin is filled between the pipe and the sealing space element.

[0027] The first arrangement state is advantageously understood to be the original starting position in which the sealing space element completely encloses the pipe with its first free end and is firmly arranged on the pipe. The sealing space element is thus fixed to the pipe on one side. The one-sided fixing is advantageously carried out in such a way that the fixed end of the sealing space element is first guided through the wall opening in the insertion direction and, when the pipe is inserted, is arranged in the wall opening in the ground. The remaining area of ​​the sealing space element remains loose within the wall opening. The sealing space element is advantageously arranged essentially parallel to the pipe in its longitudinal direction and furthermore advantageously extends to the interior of the building.

[0028] After the pipe has been passed through the wall opening, it must be sealed gas-tight and / or watertight, in particular to prevent moisture from entering the building interior. In the system described here, this is achieved by introducing the expanding injection resin and its controlled expansion through the sealing chamber element. The expanding injection resin is preferably introduced into the space between the pipe and the sealing chamber element from the inside of the building using a filler pipe. For this purpose, the filler pipe is preferably led close to the fixing area. With the subsequent introduction of the expanding injection resin, the space between the pipe and the sealing chamber element on the outside is gradually filled.Due to the one-sided fixation of the sealing chamber element to the pipe and the expansion of the injection resin during insertion, the sealing chamber element is subjected to a force and is deflected from its initial configuration. The sealing chamber element is thus designed to be deflectable in its configuration. At the same time, the sealing chamber element is designed as a guide. This is advantageous because the sealing chamber element guides the expanding injection resin in a controlled manner during its initially uncontrolled expansion and prevents diffuse spreading of the injection resin during expansion.

[0029] The sealing chamber element is designed in such a way that it guides and directs the increase in volume of the injection resin during its expansion. Advantageously, the force applied to the sealing chamber element by the expanding injection resin is radially outwards, so that the sealing chamber element can be guided both against the masonry of the wall opening in the annular space and against the masonry outside the wall opening. This is particularly advantageous in outdoor areas. By applying force to the sealing chamber element, it is transferred into a second arrangement state so that, particularly in outdoor areas, with increasing introduction of injection resin and its expansion, the wall opening is increasingly spanned until it is completely closed. The sealing chamber element thus saves material, as unnecessary spreading of uncontrolled expanding injection resin is prevented.The wall opening can be quickly and easily sealed gas- and / or watertight.

[0030] Consequently, the sealing element, as a system component, is designed to seal the external space to be sealed, as well as the annular space within the wall opening, in a controlled gas- and / or watertight manner. This is advantageous because it prevents uncontrolled material waste.

[0031] In addition, the clamping of the sealing chamber element under the application of force, i.e. the transfer from the first to the second arrangement state, is advantageously designed concentrically around the pipe, so that the wall opening can be securely closed against gas and / or water ingress.

[0032] Most advantageously, the sealing space element in the second arrangement state has, at least in sections, particularly advantageously in the outer area, a spherical segment-like and / or cup-like outline, which is further advantageously completely filled with the expanded injection resin.

[0033] In a further advantageous embodiment, the sealing chamber element is designed to be at least partially permeable. This is advantageous because the air located in the space between the pipe and the sealing chamber element is displaced when the expanding injection resin is poured in and can be discharged from the space through the sealing chamber element, preferably radially outward. This is particularly advantageous for preventing air pockets in the expanding injection resin and thus significantly improving the gas and / or watertightness and functionality of the system.

[0034] Preferably, the sealing chamber element is designed to be at least partially gas-permeable. Furthermore, it is preferred that the sealing chamber element be designed to be at least partially permeable to the expanding injection resin. This ensures that the entire space to be sealed is filled only with expanding injection resin and prevents large-area air bubbles, which later develop into holes and cause leaks.

[0035] Furthermore, it is conceivable for the sealing space element to be at least partially permeable such that 0 to 35 vol.% of the filled expanding injection resin, more preferably 5 to 15 vol.%, can be discharged through the sealing space element from the intermediate space, preferably radially outwards. Due to this additional permeability of the sealing space element to the injection resin, the latter escapes at least partially through the sealing space element and out of the intermediate space. This is particularly advantageous for leak-tightness, since, for example, gaps or unevenness between the sealing space element and the wall opening are directly filled with injection resin. This ensures a secure and controlled seal between the pipe and the wall opening. Furthermore, the injection resin exhibits improved adhesion to the masonry.

[0036] In a further advantageous embodiment, the sealing chamber element has a grid-like and / or net-like and / or filament-like structure. This creates at least one opening and / or at least one through-channel. This is advantageous because the air located in the intermediate space is displaced during the filling of the expanding injection resin and its expansion, allowing it to escape from the intermediate space. Furthermore, this is advantageous because the expanding injection resin can also at least partially escape through this porous structure of the sealing chamber element.

[0037] If the sealing chamber element is designed in a grid-like manner, it advantageously comprises a plurality of openings that are equally spaced from one another. Furthermore, the openings are advantageously rectangular.

[0038] If the sealing chamber element is designed as a mesh, the shape of the openings can be variable, for example, round, ellipsoidal, or similar. Of course, this is not to be understood as limiting. The mesh-like sealing chamber element advantageously has a certain inherent rigidity.

[0039] If the sealing chamber element is filament-like, this advantageously means that it is formed as staple fibers, for example, as a nonwoven fabric. In this case, several through-channels are advantageously formed through which gas and / or water can be conducted.

[0040] In addition to the regular arrangement of the openings and / or through-channels described above, it is also conceivable for the sealing chamber element to have a permeability gradient. It is thus conceivable for the sealing chamber element to have a higher permeability rate in a predeterminable region than in the remaining part. For example, the fixing region of the first free end of the sealing chamber element, which is firmly connected to the pipe circumferentially, could have a higher permeability rate for gas and / or injection resin than the second free end within the wall opening. The increased permeability rate is advantageously achieved by a larger number of openings and / or through-channels and / or by their enlarged diameter. This gradient proves to be particularly advantageous because it allows for particularly rapid and effective sealing of the wall opening.The increased permeability allows air and / or injection resin to escape more quickly through the sealing element into the exterior. Filling is more effective. Furthermore, unevenness or gaps between the wall opening and the sealing element are filled and sealed more quickly and effectively.

[0041] A basis weight in the range of 50 to 500 g / m2 is advantageous, and more advantageous in the range of 100 to 200 g / m2. Openings with diameters in the range of 0.01 to 5 mm, and more advantageous in the range of 0.1 to 1 mm, have proven particularly advantageous, as they allow for controlled expansion of the injection resin.

[0042] The sealing element is preferably made of at least one natural and / or synthetic polymer. The use of polymers has proven advantageous because they offer good corrosion resistance and are easy to process. Thus, it is conceivable to provide the sealing element from natural textile fibers, for example, cotton, jute, raffia, coconut, or the like. Furthermore, it is conceivable to form the sealing element from synthetic polymers, such as polyester, polyvinyl chloride, polyethylene, polypropylene, or the like. Polyester meshes are particularly preferably used as the sealing element.

[0043] Furthermore, it is conceivable to provide the sealing element made of polyamide, polyethylene, double polyethylene, or even a glass mesh fabric. A mesh size of 150–1,000 µm, or more advantageously 200–850 µm, has proven particularly advantageous when constructing the sealing element from polyester. A mesh size of 210 µm with a thread / warp count of 147 / 147, a basis weight of 135 g / m², and a total thickness of 250 µm has proven particularly advantageous.In addition, a mesh size of 285 µm, thread / warp count of 103 / 103, a basis weight of 110 g / m2 and a total thickness of 168 µm; a mesh size of 335 µm, thread / warp count of 165 / 165, a basis weight of 120 g / m2 and a total thickness of 280 µm; a mesh size of 335 µm, thread / warp count of 165 / 165, a basis weight of 120 g / m2 and a total thickness of 280 µm; a mesh size of 390 µm, thread / warp count of 400 / 400, a basis weight of 320 g / m2 and a total thickness of 700 µm; a mesh size of 465 µm, thread / warp count of 200 / 200, a basis weight of 135 g / m2 and a total thickness of 365 µm; a mesh size of 300 µm, thread / warp count of 165 / 165, a basis weight of 180 g / m2 and a total thickness of 450 µm and a mesh size of 840 µ, thread / warp count of 400 / 400, a basis weight of 165 g / m2 and a total thickness of 520 µm have proven to be particularly advantageous.Overall, it can be stated that a total thickness of 150–1,000 µm has proven particularly advantageous in this case. Sealing chamber elements made of polyester also prove advantageous because they are particularly easy to position and are resistant to acids, alkalis, solvents, and hydrolysis. Furthermore, they offer excellent temperature resistance in the range of -75 to +175°C.

[0044] If a glass fiber mesh is required, a mesh size of 1.0 × 2.0 mm, a basis weight of 58 g / m², and a total thickness of 0.14 mm, a mesh size of 0.8 × 0.8 mm, a basis weight of 42 g / m², and a total thickness of 0.12 mm, and / or a mesh size of 1.5 × 1.5 mm, a basis weight of 58 g / m², and a total thickness of 0.18 mm are particularly advantageous. This type of glass fiber mesh is also very easy to position, is acid, alkali, and water resistant, and has a temperature resistance range of -75 to +150°C.

[0045] Total thicknesses of the sealing element in the range of 150 µm - 0.5 mm have proven particularly advantageous. When the sealing element is constructed from a glass mesh fabric, the surface weight should be selected in the range of 30 g / m2 - 100 g / m2. Accordingly, a mesh size in the range of 0.3 mm - 3 mm is advantageous.

[0046] In addition, however, it is also conceivable to use nonwovens as sealing space elements, whereby these preferably have a filament-like structure.

[0047] In a further advantageous embodiment, the sealing chamber element is designed such that, upon introduction of the expanding injection resin into the space to be sealed between the pipe and the sealing chamber element, the volume of the intermediate space can be increased, preferably in the range of 10-600 vol.%, more preferably in the range of 50-500 vol.%. This is particularly advantageous because the sealing chamber element is thus understood as a guide element, by means of which the expansion of the injection resin is guided in a controlled manner and unnecessary leakage of the expanding injection resin into the surrounding soil is prevented. Furthermore, the injection resin material is used efficiently and saved.

[0048] The sealing element is advantageously flexible. This allows the volume increase caused by the introduction of the expanding injection resin to be controlled without destroying or damaging the sealing element. The sealing element thus enables controlled expansion of the injection resin, both against the building's exterior wall and within the wall opening in the masonry, thus creating a gas-tight and / or watertight seal.

[0049] In a further advantageous embodiment, the system further comprises at least one sealing element, which is preferably designed as a foam sealing tape, more preferably as a self-adhesive foam sealing tape. This is advantageous because the at least one sealing element encloses the pipe circumferentially, advantageously as a precisely fitting ring. Furthermore, the sealing element is arranged on the pipe in such a way that it is essentially flush with the interior of the building. Due to its foam construction, the sealing element is at least partially elastic, so that the filler pipe can be easily guided between the sealing element and the pipe and / or wall opening without damaging the sealing element. The sealing element serves to seal the wall opening to be sealed and prevents expanding injection resin from escaping from the annular space towards the interior of the building.

[0050] A further advantageous embodiment is achieved in that a jacket or protective pipe can be omitted if a sealing chamber element is installed on the medium-carrying line, advantageously the pipe, to the surrounding masonry and thus, in conjunction with expanding injection resin, a gas-tight and / or watertight as well as pull-out-proof connection is achieved from the inside and outside.

[0051] Furthermore, the present invention is intended to provide a method for installing a pipe in a wall opening, which is simpler and more cost-effective than known methods. The method comprises at least the following method steps: according to claim 6

[0052] In particular, step f) is to be understood as meaning that the sealing space element is subjected to a force by the expansion of the injection resin and is thereby moved away from its first arrangement state.

[0053] The sealing chamber element is arranged on the pipe in a first step. This can be done in different ways. If the sealing chamber element is designed as a flat part, it proves advantageous to arrange the sealing chamber element circumferentially, preferably in multiple layers, around the pipe, with at least one overlapping area being formed. In this first arrangement state, the sealing chamber element advantageously extends in the longitudinal direction of the pipe, essentially parallel to the pipe.

[0054] Subsequently, the sealing chamber element is secured to the pipe at its first free end along its circumference using the aforementioned fastening means. This forms the fixing area or fixing section. The second free end of the sealing chamber element remains loose, i.e., unfixed. Furthermore, the second end of the sealing chamber element is advantageously arranged within the annular space.

[0055] In a further step, the pipe with the sealing chamber element attached to it is guided through the wall opening, with the fixing section of the sealing chamber element oriented forward in the insertion direction. The pipe is guided through the wall opening until the fixing section is positioned through the wall opening into the outer area.

[0056] In a further step, the sealing ring can advantageously be arranged flush with the inside of the building on the pipe.

[0057] Next, the filler pipe is inserted into the space between the pipe and the sealing chamber element, placing it essentially in the outer area near the fixing section. It is advantageous to position the filler pipe close to the fixing section, as this ensures uniform filling and expansion of the injection resin.

[0058] As the injection resin is poured in and expands, the sealing chamber element is moved from its initial configuration. The injection resin increases in volume, so that the sealing chamber element is subjected to a corresponding compressive force, which essentially moves the sealing chamber element radially outwards in the direction of expansion. Due to the special design of the sealing chamber element, it performs a controlled expansion of the injection resin, advantageously concentrically around the pipe. The sealing chamber element, which was previously arranged essentially parallel to the pipe, is filled with injection resin and preferably forms a spherical segment and / or cup-shaped shape. Due to this force application and deflection of the sealing chamber element from its basic position, it is guided against the outside of the wall opening in the building, sealing it.

[0059] In a further step, the filling pipe is advantageously guided continuously towards the inside of the building so that the annular space is also filled and sealed with expanding injection resin.

[0060] Furthermore, the method is advantageous because it is carried out without trenching. "Trenchless" means that a head hole is omitted. The method described here is therefore faster to implement and more cost-effective, as it avoids the need for complex excavations on the exterior of buildings.

[0061] Furthermore, the present invention also claims the use of a system for trenchless, gas-tight and / or watertight sealing of installation penetrations located in the ground through building walls.

[0062] Furthermore, it is conceivable that the system described above further includes at least one centering ring. This serves to properly center the pipe in the annular space. This ensures that the annular space is as small as possible across the entire cross-section of the building wall, thus avoiding axial forces at the house inlet. Components such as house inlet pipes, which can transmit a torsional moment after installation, are preferably installed in such a way that they can withstand torsional moments of DN 25 (1") 240 N / m, DN 32 (1 1 / 4") 300 N / m, DN 40 (1 1 / 2") 360 N / m, and DN 50 (2") 480 N / m for an exposure time of 10 seconds.

[0063] Furthermore, the design of the double-chamber cartridge described above is not limited to the example given. It is also conceivable for the two chambers, in which the respective components are initially spatially separated from one another, to be arranged directly adjacent to one another and to have a common contact surface between the chambers in their longitudinal direction. Furthermore, it is conceivable for the chambers to be arranged coaxially to one another and preferably to be enclosed by a housing at least in their longitudinal direction. In this case, one chamber is enclosed by the second chamber like a jacket, with the components arranged in the chambers being spatially separated from one another. When a cartridge designed in this way is pressurized in a suitable hand-operated pressure gun, in the simplest case, both chambers are pressurized with the same pressure, which causes both components to emerge from the respective chamber into the spray nozzle.Advantageously, the components are mixed within the spray nozzle, which comprises swirling elements, such as screw-like wound or plate-like elements, for better mixing.

[0064] It is also conceivable for an additional cavity to be provided upstream of the spray nozzle, in which both components emerge from the chambers when pressure is applied and mix with each other before the mixture emerges from the spray nozzle. It is also conceivable for the common separating surface to be arranged so as to be releasable in order to facilitate the mixing of the two components. Of course, the design of the cartridge is not limited to the examples mentioned here. For example, it is conceivable for further chambers to be provided, each of which provides depth for changing the rheological and expansion properties. Advantageously, all elements arranged in the chambers are spatially separated from one another, whereby the separating surfaces can be arranged so as to be releasable as desired. Furthermore, it is conceivable for additives such as fillers to be added to components A and B.

[0065] Further advantageous embodiments are shown in the accompanying drawings, which show: Fig. 1 a schematic sectional view of a system before sealing; and Fig. 2 a sectional view of a system after sealing.

[0066] Fig. 1 shows a schematic sectional view of a system 1. The pipe 10 is arranged to pass through the wall opening 12, so that it is located both in the building interior 18 and in the exterior / ground area 24. The sealing chamber element 14 is firmly arranged on the pipe 10 in a fixing area F by means of a suitable fastening means 16, for example a cable tie or a sleeve. The fixing area F is located in the exterior / ground area 24, outside the wall opening 12.

[0067] Advantageously, the sealing space element 14 is designed as a tube and extends essentially parallel in the longitudinal direction L of the pipe 10 both inside and outside the wall opening 12. Furthermore, it is conceivable to provide the sealing space element 14 wound in multiple layers around the pipe 10. The sealing space element 14 is designed, for example, as a net-like grid made of polyester with a certain inherent rigidity.

[0068] The wall opening 12 is closed toward the building's interior 18 by a sealing element 20, for example, made of foam. The sealing element 20 is advantageously designed as a ring that concentrically surrounds the pipe 10 and is essentially flush with the building's interior 18.

[0069] The filling pipe 22 for introducing the expanding injection resin (not shown) is arranged in the intermediate space 26 between the pipe 10 and the sealing space element 14 and extends at least into the outer region 24. Consequently, Fig. 1 shows a first arrangement state of the sealing chamber element 14 before the introduction of the expanding injection resin. D1 refers to the diameter of the pipe 10 with the sealing chamber element 14 arranged circumferentially thereon in the first arrangement state. D7 shows the diameter of the wall opening 12, which is subject to certain fluctuations.

[0070] Furthermore, the exterior wall of the building is coated with a bitumen coating 28. This serves to provide additional insulation and sealing of the remaining exterior masonry.

[0071] In Fig. 2 then shows the second arrangement state of the sealing chamber element 14. The same components as in Fig. 1 are provided with the same reference symbols and will not be explained again.

[0072] Here, expanding injection resin has already been introduced into the space 26 between pipe 10 and sealing element 14. Due to the resulting expansion, the sealing element 14 has been moved from its original state, essentially parallel to the pipe 10 ( Fig.1). The sealing space element 14 is shown in a cup-shaped state 30 in the outer area 24 and filled with injection resin. The sealing space element 14 controls the expansion of the injection resin in such a way that with increasing introduction of the resin into the intermediate space 26, a cup shape 30 is created, which expands until the wall opening 12 is spanned and thus closed. Advantageously, the sealing space element 14 extends with injection resin up to the bituminous coating 28, so that an additional barrier layer is formed. Furthermore advantageously, the expanding injection resin penetrates at least partially through the sealing space element 14 out of the intermediate space 26 into the ground 24, so that a particularly effective and secure sealing of even the smallest gaps and unevenness between the sealing space element 14 and the bituminous coating 28 is filled and sealed.

[0073] In the second arrangement state of the sealing space element 14, the intermediate space 26 has experienced a significant increase in volume, so that the diameter D2 is significantly larger than D1. Advantageously, the wall opening 12 is also completely filled with the injection resin in this arrangement state. For illustrative purposes, the lattice-like structure of the sealing space element 14 is shown in sections. It is understood that the entire sealing space element 14 in this exemplary embodiment has the exemplary lattice-like structure shown here. Of course, it is also conceivable for the sealing space element 14 to have a net-like or filament-like structure. List of reference symbols 1 system 10 pipe 12 Wall opening 14 Sealing chamber element 16 fasteners 18 Building interior 20 Sealing element 22 Filler pipe 24 Outdoor area / Ground 26 space 28 bituminous coating 30 cup shape L Longitudinal axis

Claims

[1] System for installing a pipe (10) in a wall opening (12) comprising a pipe (10) for insertion into the wall opening (12), a sealing chamber element (14) for sealing a space to be sealed between the pipe (10) and the wall opening (12), as well as the outer wall area in the ground arranged around the wall opening (12), expanding grout with an expansion volume of 3.0 - 6.0 : 1 for introduction into the space to be sealed, and a filling pipe (22) for filling the expanding grout into the space to be sealed, wherein the sealing chamber element (14) is designed as a strip, wherein the sealing chamber element is arranged at least section by section on the pipe in a fixing area by means of at least one physical and / or chemical fastening means. characterized by, that the sealing chamber element (14) is arranged on the pipe (10) in a first arrangement state when the pipe (10) is inserted into the wall opening (12), wherein the second end of the sealing chamber element (14) is designed to be free of fixing and loose and is arranged in the annular space within the wall opening (12), and, upon filling the space (26) between the pipe (10) and the sealing chamber element (14) with expanding grout, is guided against the wall opening (12) in a second arrangement state and seals the space to be sealed in a controlled gas- and watertight manner, wherein the sealing chamber element (14) is arranged in such a way,that in an inserted state of the pipe (10) in the wall opening (12) it is partially arranged outside the wall opening (12) in an external area (24) and the fixing area of ​​the sealing chamber element on the pipe in the inserted state of the pipe in the wall opening is arranged at a distance of 2 cm to 20 cm from the wall opening (12) in the external area. [2] System according to claim 1, characterized by , that the sealing chamber element (14) is at least partially designed as a casing for the pipe (10). [3] System according to claim 1, characterized by that the sealing chamber element (14) is at least partially permeable. [4] System according to claim 1 or 2, characterized by , that the sealing chamber element (14) has a grid-like and / or net-like and / or filament-like structure. [5] System according to claim 1, characterized by, that it further comprises at least one sealing element 20), which is preferably designed as a foam sealing tape, more preferably as a self-adhesive foam sealing tape. [6] Method for installing a pipe (10) into a wall opening (12), comprising at least the following process steps: a) Arrangement and at least partial fixing of a band-like sealing chamber element (14) by means of at least one physical and / or chemical fastening means to a pipe (10) to be led through the wall opening (12), wherein the second free end of the sealing chamber element (14) is unfixed and loose; b) The pipe (10) passes through the wall opening (12) from an inner wall side (18) towards an outer wall side such that the sealing chamber element (14) is partially guided through the wall opening (12) into an outer area (24) and the fixing area of ​​the sealing chamber element on the pipe is arranged in the outer area at a distance of 2 cm to 20 cm from the wall opening (12) when the pipe is inserted into the wall opening, and the second end of the sealing chamber element (14) is arranged inside the wall opening (12) in the annular space; c) Insertion of a filling tube (22) into the space (26) between the tube (10) and the sealing chamber element (14); d) Filling the space with expanding grout (26); e) Widening of the sealing chamber element (14) by expansion of the injection resin; and f) Guiding the expanding injection resin to form a gas- and / or watertight seal. [7] Method according to claim 6, characterized by that it is carried out without trenching. [8] Use of a system according to at least one of claims 1 to 5 for trenchless, gas- and / or watertight sealing of building walls located in the ground.

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